Die casting molds are a method of casting liquid forging, a process completed on a specialized die casting and forging machine. The basic process is as follows: molten metal is first poured into the mold cavity at low or high speed. The mold has movable cavity surfaces, and as the molten metal cools, pressure is applied to forge the metal, eliminating shrinkage cavities and porosity defects in the blank, and also achieving a forged, fragmented grain structure in the blank. This significantly improves the overall mechanical properties of the blank.
Die casting molds are one of the three essential elements of die casting production; none can be omitted. The die casting process organically integrates these three elements to stably, rhythmically, and efficiently produce qualified castings, and even high-quality castings, with good appearance, internal quality, and dimensions conforming to drawings or agreed-upon requirements.
Die casting molds are very expensive, specialized, and precision machines, requiring mold repair workers to possess not only excellent skills and meticulous work habits, but also a conscientious and responsible attitude. Mold repair technicians should be familiar with the following die-casting mold technical standards:
Eight Standards
1. Thoroughly clean all metal filings and scale from the mold to reveal its original condition.
2. Refer to the last die-cast product sent for repair with the mold and carefully inspect for any problems. Check for scratches, sticking, crushing, chipping, bent or broken small cores, inaccurate insertion and positioning of movable cores, broken ejector pins or changes in ejector pin length, inaccurate insert positioning, and loose bolts, etc. (Mold expert WeChat: mujudaren) Determine repair or replacement based on the extent of damage.
3. For minor scratches on the casting such as cavity collapse, cracks, and chipping, local welding repairs can be performed. Welding repairs must be strictly performed according to the welding process; otherwise, it will significantly reduce the mold's lifespan. Smaller molded parts will experience more severe problems or mold damage due to these faults.
(Contact information: WeChat ID: mujudaren) 4. For larger molded parts with severe surface collapse, cracks, or chipping, localized welding repair can be performed. Welding repair must be strictly performed according to the welding process; otherwise, it will significantly shorten the mold's lifespan. Smaller molded parts will experience more severe problems or even mold damage.
5. Sliding parts such as core-pulling mechanisms and guiding devices should be thoroughly cleaned, carefully inspected, and repaired. Re-lubricate with high-temperature grease before reassembly.
6. If there is a hydraulic core-pulling mechanism, the hydraulic system and mold should be repaired simultaneously. Special attention should be paid to cleaning the hydraulic system during repairs to prevent contamination, which could pollute the entire die-casting machine's hydraulic system.
7. When the mold malfunctions or is damaged during production, a repair plan should be determined based on the specific situation. If necessary, comprehensive repair as described above should be performed.
8. After maintenance, the mold's molding surface, parting surface, and mounting surface should be treated with rust prevention. Close and fix the mold, and place it on the pad according to its installation direction on the machine. Mold accessories should be placed together with the mold.
Landed plunger mold (with shoulder)
Burishing die (extrusion die)
Landed positive mold (with shoulder)
Button die (inserted circular die)
Loading shoe mold (sleeve type)
Center-gated mold (center gate type)
Loose detail mold (movable part mold)
Chill mold (cold hardening mold)
Loose mold (movable mold)
Clod hobbing (cold extrusion mold)
Louvering die (louvering die)
Composite dies (composite mold)
Manifold die (manifold die)
Counter punch (counter punch)
Modular mold (modular mold)
Double stack mold (double-layer mold)
Multi-cavity mold (multi-cavity mold)
Electroformed mold (electroforming mold)
Multi-gate mold (composite gate mold)
Expander die (expanding die)
Offswt bending die (double-fold bending die)
Extrusion die (extrusion die)
Palletizing die Stacked mold
Family mold (reverse-shaped mold)
Plaster mold (plaster mold)
Blank-through dies (blank-through die)
Porous mold (ventilated mold)
Duplicated cavity plate (duplicated cavity plate mold)
Positive mold (full-pressure mold)
Fantail die (fan-tail shaped mold)
Pressure die (pressure die)
Fishtail die (fish-tail shaped mold)
Profile die (profile die)
Flash mold (flash-out mold)
Progressive die (progressive die)
Gypsum mold (plaster mold)
Protable mold (hand-held mold)
Hot-runner mold (hot runner mold)
Prototype mold (prototype mold)
Ingot mold (steel ingot mold)
Punching die (blank-through die)
Lancing die (lancing die)
Raising (embossing) (embossing)
Re-entrant mold (re-entrant mold)
Sectional die (assembly mold)
Runless injection mold (runless cold slurry mold)
Sectional die Segment mold
Semi-positive mold
Shaper
Single cavity mold
Solid forging die
Split forging die
Split mold
Sprueless mold
Squeezing die
Stretch form die
Sweeping mold
Swing die
Three plates mold
Trimming die
Unit mold
Universal mold
Unscrewing mold
Yoke type die
